{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57937",
    "entityType": "User",
    "nonce": "0xf641c190747c88a346a3591dc957c24ca80510101aa4c55e96d936d32a633218",
    "signature": "0x5cf980612e48fbf58b6702871520ac2a4b7af8b4ea0485475ef6aaac00627c8f21a7902b50dd7eaff4425b33a984187cb48dbd1511034ac10519f0771bd3304a1c",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}