{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1579",
    "entityType": "User",
    "nonce": "0x50a3136a835af26cf124a32382b8ef36fc2972fb4d64ff5dc0edd6be56e81f0f",
    "signature": "0x9547bdb0582156fa416d5dc61af0a5c00742e4f5a6d39f8a7675db33916dd1546798523d7b6023799bbff7cc1bcdcabdf17aaf32ba098e8704a4667ac4c606aa1b",
    "signer": "0x07691D0C34E03020A13BE4B5a411B64CcFff5556",
    "userId": "9014"
  }
}