{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "613990166",
    "entityType": "User",
    "nonce": "0xb7f0de3443b1f3abab1dd36b317363d6741a1f4000758437c674136a49da3072",
    "signature": "0xd0f3f25969394f24c9f50ca34cd8e3847133af04d513d045b01315262b4e5d342a9012e70d127533690c62ffe7ca3abe0a852edfd62f6793745e8f09c568430c1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}