{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "353528",
    "entityType": "User",
    "nonce": "0x225ba273ec7c9f7d7dc2cc3a329f542d3aec97be942efd2b8d12b97be0d52495",
    "signature": "0xccc1044068107c584d9af28ab896de767ed5fafc62c5d094eaf42f24662fe2281536d5b671671ade034f24e65b6d6e2a3b4c1c9b8716b98903eaad214f74a95a1c",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}