{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "123395122",
    "entityType": "User",
    "nonce": "0xd83cb0f9c38edae0b6884a28967b93d80a50c6ef3431393f87198e0a87cfa51f",
    "signature": "0x594e83747a9911b093f07d2fbaa37618cf1d031e5bca8ce7bafbc2100461a4ab5ee47389a9e3d6db5422d52dedc82a74f0623d7a4faaa51f27599a8c8ad1ea3e1b",
    "signer": "0x92328BFDeD38C9a9De6E253A0CF5CB46A3B28611",
    "userId": "831117417"
  }
}