{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "881446128",
    "entityType": "User",
    "nonce": "0x521600e7cf1747c160ada221befb5f49242280397ec96bb5cc121c5720f5b4ef",
    "signature": "0x9104ba4277ad649d19b4ed1ef239749d173e191dc0de04c55835c5fa1235d11a355f59ac3e0252757fba65bb5be49697aad34a5a9d59bda6dfb45cb7be17a38a1b",
    "signer": "0xA9507d2878E25885A7375c257746F5fEeAcb09AB",
    "userId": "89625"
  }
}