{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd35af1079d602d58961d2422052e0816f4836ea4968d26e243a26426285d980a",
    "signature": "0xf8342e4da0bd3c92ef7767ab655fa5f79ddc511730cfa45b583835efa2b54b7f442bc86e006a17a3c83e33b142a0d56ce4d37952f12d7b3b02d6994df26efd671c",
    "signer": "0xca49c4376F1D495D19DCA58991553F1fd0fF05AB",
    "userId": "37684323"
  }
}