{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7600",
    "entityType": "User",
    "nonce": "0x4881f9f4b51fcf033b0633c1a977083f41e9fc5f4d62f0e98f19858760f1b752",
    "signature": "0x45ff2f142fd4c809f57f7c38fc301e0ec6efe406dfcf0b5e6e77a9f12fc194bd449f3aa1eb1a32a174a599a1e81f7d3a76d364d605bf584cd7f9fab279933bda1b",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}