{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "323887682",
    "entityType": "User",
    "nonce": "0x30d2a14fec1a39272c36befcc570c56d85e35f4ea24380d6fe1abd76f687ae64",
    "signature": "0x89afc5abea15c9eb38137508c075be4e6504a373f274c4ade98f7729c2f0bf517a85a1b34d2a5473896e364a000503520dfad4e346bd79b128b2d145baf3a2e61c",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}