{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "637066952",
    "entityType": "User",
    "nonce": "0x13d3599c694becd9387df1cff4010dcf629b6becd4c9f2ee475104e8022dc5c0",
    "signature": "0x7b6f88c6d6c98d3d8e52aeea3687365ff39e65de270b8e852ba40a486ca18e425c8bc9fb4b32347b87c659fe785f580c80f9c67ba837b1e0094be6fb39d6908f1b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}