{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe512485723a8e44a1017b602ad6a6d0753feef405e96c9e4c94c1dbd85c9a2d9",
    "signature": "0x2a796f720300d212db39abc752b95a9a9076be838281037461eeadb2cd1647d14c8de5b2927c9780ad0c467b1fc79af6adad6a12f3b0e89b1b315821419c12311b",
    "signer": "0x2507F88d3b5F4867a0271ccF6bEE0f05B1bA23e9",
    "userId": "729994631"
  }
}