{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd981329d16787bca910c6bf69bb6a4858c28e3a9cedd22f4129cf1a0acd475d7",
    "signature": "0x52e6bf0771294eefa5cdb0a76f5a08348a8a07f5981e31ffbecd3eb32a9f92fc5f65ee0bb857555b72dac337a4bb440435bfe2fa72cd11462640be6611151c541c",
    "signer": "0x4d8B00657C2a3A08D362c695Ef7532cF78048EEA",
    "userId": "41995498"
  }
}