{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe65a7c40488ecec5aba92489b169fa3d8090a5d08938a140ca23e06292ed0748",
    "signature": "0x561c33498b297874ab94d9fa8da46f82310577e7822de9138aa00c197f34ba7540fdfbb9717ebd0b76ee63f77ad92ba4456591f27da6dd66408a3b014555b93b1b",
    "signer": "0x73E2794DB81EBdF032b2885674F93Dc04A35B6e3",
    "userId": "564914527"
  }
}