{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1721",
    "entityType": "User",
    "nonce": "0x26a33c6a3707554eae65ee253c53a0d8ec28d7d1c8c441db26c37be461d15c96",
    "signature": "0x938ab18129758853edc3d48b033505c81bf66e220d38aed7421134e263e2abdd16568213b784fe505f8b35f407ad9b0841c810a576e8d42e089f12f8a00526941c",
    "signer": "0xF2c19977A72e7f63bBbD9063748E52c002b22f6b",
    "userId": "957488166"
  }
}