{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "581700621",
    "entityType": "User",
    "nonce": "0xd437ffe07712397675ee0497d4afd978d13d15952bc3495c0e7a35df6cba8840",
    "signature": "0xda64508ac59c72ef98970e5c722db0d53aaefd1e39d6b6b8bdafd313ec65ad3a388208194eb32d3ab1b8f2b228462724a4e6ef6d6e16758e031a68b5f8156a261c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}