{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa34c2180c0e1381d3bd3c6b496b3c86284fefa725d43e2d4c5552453bd208c7a",
    "signature": "0x4d9963f34e2e248d8ef95cd1c7912bcc487f2320fd133d69317f1407e86539ce58365dcdb03ebc1cb8e40fca4082afbc609cd5fe5ccd846969daa2af1241b81a1c",
    "signer": "0x0aad759fF091935FDA739a94F21294d1b681F4FE",
    "userId": "421631490"
  }
}