{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1687304",
    "entityType": "User",
    "nonce": "0xbf5e9c6b1e0dfb0bd7822fd7ffab2eed908dedef64e1d50e6f79086100df087b",
    "signature": "0x7d05a7ebb59f867a6b0cacd6ba7a9cc81b989d40b40baf0e40c250d17c2d63a32dfa0265f3b283cb7c0fcd3d727c6c97dc5d94c6aadcedd78c0b6db16ded20db1b",
    "signer": "0xd2A8B245BbEb9d6023dE5f5C663A3800822f2807",
    "userId": "194320283"
  }
}