{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343724",
    "entityType": "User",
    "nonce": "0x4e59f689a864f6c67f39f720b3edd93d211858e12d5770ca89c21518534370e2",
    "signature": "0x082d66141391659926afa4754be6e08f4f0bccad21402c5ea35ff0dd2386fe867402220fd60217786d14faf46b5585fa7a3879677323bc35356f383b364673eb1c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}