{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1666731",
    "entityType": "User",
    "nonce": "0xd339fe45e9153bc2b7b7a5d3072812fb7e7396e14f2600237162caa7f0f41883",
    "signature": "0xd969021103a5d5b0a2436e4acee7cb58c5dc695628bcc2cc89a8dbca35bba9b663057945638fb7d52f948ac0ad679a20d8d18932452d6b9c355f04e7ed8acb191b",
    "signer": "0xc74a5C0B76bF95109EFE2119058182fD3D75EA63",
    "userId": "222972690"
  }
}