{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "74012",
    "entityType": "User",
    "nonce": "0xb8c35cc556358d4336d554e7ed173c54d9b2b7f0d3e4c0e40fd660b5df08dd9f",
    "signature": "0xe2153570d688d362a48b4505b7a90b2e26f9f2e3301ad0903647a88fd7aba1572bf7b9c64dc9551b33edb8ac7f79170af19b409d4d69dfcbc6ff5506c26e5d4e1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}