{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991877005",
    "entityType": "User",
    "nonce": "0x61b8b1de567ef4b1ea17dab9288d463be9f94536e5c47e5bb83d78ddc7b4103d",
    "signature": "0xdde0e05b5dddf0a59c146d3ded7211be723b21f8aed5b1479d6ffa116fc98ad82476fc9d0536f12efdbc469ca3abc34c599f2fe82f3e567f8d1bff084c4346ec1b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}