{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155973826",
    "entityType": "User",
    "nonce": "0x75877666d719dcd6475327d4c71bfa2d8749a4103df46496ef8dd0ea1c8872d9",
    "signature": "0x7c2c2a82b203a0a5ded5a65087e8673133f916359bf36cdd219c5a910ef3fbd178b723c140f37ac323902e0f73eedf1affc9ba88826ba547302d06c899cbdc741b",
    "signer": "0x607C0B504B1190F4Fa45D4712D4449C62F7224E7",
    "userId": "870305968"
  }
}