{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1887966",
    "entityType": "User",
    "nonce": "0x01de3c4a20aa193ceb3b204afc47cb5e43627d9fe895346fab8de4fd70ab2079",
    "signature": "0xebb6638d1f3f8bc0feab7fa65c694f0fb4c82e56fc2b1d0bf6fc9d300b1b39435a67411041fa3eea952eff3416d82b521d438a80e20977d88ac334dd70e0b8ee1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}