{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "669876218",
    "entityType": "User",
    "nonce": "0x7801e5b3aba51f90ecd9c0bb257c03d6c26230e3697bfcd6d0dd873cf8947485",
    "signature": "0xea38bead8768a8b099cbbee28e2102f65fd3dd7516d0d12e2d74f597b6229fc04df782286180727f7c1bfe2714a9f95a6ec19cbbd1b0f6a96f0d8d53539f8fee1b",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}