{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0xb12b7626bd4781eb602a32b9ce3aaf1f34b2d16cd8bcb840800e4503571b32cf",
    "signature": "0xc2e254b315353fdd52c49c49f631c649671d90083db469aa045da0625857d54e5d2c2b8706fae47586a26e12e9fdada4fa8da1d6fdd8ed94ea44c62eddf7cff81b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}