{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8b750909955f9e7ba28573136b9728f9bf41e1750fa9243bbbd426aba91a3ecd",
    "signature": "0xef78b325aa4877c50e66959562f5fd32958a1ba77166293c5854965d0dfed85d536a7db322e6d27590aaa8feec2ef6c06b6f947e627355ec4d8f29bbdde7d4cf1b",
    "signer": "0x15B583eF01b20456cE3159EB80C92179E43d10E3",
    "userId": "5269991"
  }
}