{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x528b50bad9dd035efe1b0a2ca878865cdf3c894fe659f1c68a74ae050d9cc130",
    "signature": "0xa10e17055599c40f4819dd6db91cd3cfa362e74c201f4c5b7f37dd4e06a613ab0f0d4ee1ee75379095330fe67cde2d8eb2ea3ac5d949417f1bda22da11171b2f1b",
    "signer": "0x7702aF07807B303993bF7903441beE3b430Ae7Cd",
    "userId": "240479657"
  }
}