{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "150769",
    "entityType": "User",
    "nonce": "0x53e70efbb768783d2dbaa4445e14cf0db8305c60ba5cb346af943f63c73e66df",
    "signature": "0x2fb664ad7a72b2b23b07d1578af4afb6ccdf74c031cb6a206f1b185cb951dbd87c732d965a8fc5c57cb5e2612aeaf663384f5f8017c7b831db8cc8497d79d37b1c",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}