{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x73e027fd984d246a02e141b42e02237914ea1588534a93f6cc45c46fb3e682eb",
    "signature": "0x22c13bf2d0a688c715d15f80c72fc37d04e87341a3fc461b0c6a60a852ec91516bd74f07905b85eb81a070d9d09cbf230170ceb14ee35d04a2c1f08b3be0b30b1b",
    "signer": "0x0B4CBD3E1eAB90219fb22Be62f1bb518f43fA87f",
    "userId": "588449107"
  }
}