{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdcf89eaf08539cfa78f0fc1fb50816e8d831efe36e241dfbce7456ca88c13d4b",
    "signature": "0xfd5d86049d7aa0a16f1ad68abc72244e0d723c2332a84da9db2d31cb2c3d43da67b1036106444982c64f85f9afaa6eafa533acede5392826f159c777d5a41d491b",
    "signer": "0x16154056d7cA96823a10994b08601cD6e4B9495A",
    "userId": "966943089"
  }
}