{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "100910",
    "entityType": "User",
    "nonce": "0x0bd9729289ee01494c75f5fe74e25aa5ecc5a2494c15727c8419c5ff64ca6689",
    "signature": "0xbc776c4f8d1f9d11e8a26e6bf5e9fac3b33762023596afa2d218eee89753d33a05a9fc1353b9e4212a1b4c3e32013682356c768fe7efe66dd2a0057e47ea6e841b",
    "signer": "0x064Ea348B4Ddc8744F23c071534144974f8439d3",
    "userId": "58707019"
  }
}