{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "560200901",
    "entityType": "User",
    "nonce": "0x746ef7001c19c8bb0dc54e6d20b3312fa3f4fbd580e674f40d99113f5d2b3073",
    "signature": "0x794e30fb436c3ab553a478d45ef94c9bad8626cd9f64e0d065afb2635377a1697109873487596726d94061365f232ec09d70f68f629bd6f3a4722aaca047de991b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}