{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x78abfe0e5509bab99d9f71fc62d43a0fbe7a8a463a5ed3dd6c5c0c10e4e2fceb",
    "signature": "0xe3d58efdc415649e4a0dbb64355242f82e74c5c5ac75e9987e4fc223394ad0ef06161171a3917ec98165c998528392ee27f64e2fb67094942fad6fc5c3331a571b",
    "signer": "0x53d216C674F2a330cE48F25b556d4339bcf6515c",
    "userId": "448697058"
  }
}