{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1881010",
    "entityType": "User",
    "nonce": "0x1abe27a8955a62939961b75a2042c64aab6593792d5d67263cc3f6966a548b59",
    "signature": "0x9b64a8f7fa7fb266bd1e4eccf7767dfd9911c4e0a1fef26fc78491f0c38234c42ab78426262dcbe9caf6b39c970f9109a83612a304a8767483b729d12ea80dd11b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}