{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325",
    "entityType": "User",
    "nonce": "0x090012842b1e7998f2a160eac1d91ed0f23f3ffd1d186057ffdb2e22c43b41b7",
    "signature": "0x87d23c925c1213181dc9c0669f97017d800dc60f4a20596e814b549666f86a9c68028c88af68d43d4fe93cc580d44371e948c95d5e8a91c837fb6c38500160cc1c",
    "signer": "0x07cB076DaACCA202F3ffB2dF4A778b16AcEf28Ee",
    "userId": "998685050"
  }
}