{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x9c052ba4c5ca65b26eff5a0bbd50240710a9fab6c08ac569de6fe01b1e4bc5c3",
    "signature": "0x71dff55ddf391cea01ef5c75b8b36bee8a0bea06e47730c755bbd9c02ceb2e430af4cd7f872884e23c580fd354bf6b99fee875505a0a34b9b5df821f939e38ee1b",
    "signer": "0x5D4848bCf5c4abA1a0Fdf2B61408c9e4288aDb0E",
    "userId": "305415280"
  }
}