{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "278865767",
    "entityType": "User",
    "nonce": "0x91615b2e0fec446fe6f477fd0cfacbbaa94ed2b8313679c03667983e8156de60",
    "signature": "0xc5b145c6bb8bab74d2609ac2dfde5ae2b7b2d093383bf6a26325bd869f2bacda6d71076d2503a7d4cc0c076c347b9fc09220d01124a0fb16422666babe6d96071c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}