{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x05c44294e2f7111435cd5d981f24608ad92c2830c7d6c921fc6225d2464f3055",
    "signature": "0x7d4e03423472f6f9dab8ed7ea96e21da9058d2e6922119fff02a8747fb0027cb490676cc3d4ca0857aa3c739d153dbd7a0c50a9ea13152f90d52644c8be849d91c",
    "signer": "0x5bB9Cd295E2E2Ec2Da049D53c19449e5BD75e200",
    "userId": "354197891"
  }
}