{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508263176",
    "entityType": "User",
    "nonce": "0x735ed55437b4263c3b947b8359edf00e580233423356310341494e6dcfefb890",
    "signature": "0xb2863d4062ac7945f41e52ce4143292cfc37df665af2606e7defb4de331e85eb6bf3ce48b7350837d5d351e8921bc1ebf6526aa3dc2790cf5a453cd00f0f29631b",
    "signer": "0x09Ed944A6653804DF5E864d5240c837F643E2c0F",
    "userId": "214509563"
  }
}