{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308439",
    "entityType": "User",
    "nonce": "0x2685e05ec6d0ea8193c2092d3d2ef2da8917d1c9ef2579de03c59eb96e1172b2",
    "signature": "0xee8ab54454208e0b5f0eddfe31f4a55bf8566ad76660585eb3f84370b7ae08c162a18002bd2a79fcfe47c93661d935de17f0d9f036c787c233f477d3962118c91b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}