{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77916",
    "entityType": "User",
    "nonce": "0x5e5aa3a314c3212cd4ff0aa5068137b986e00f85ca0f462eb20ff2f56b4b649e",
    "signature": "0xc8c0410611ee9040939e62c3418052ba9ae9e131db03dd98662bf80d414fa28f29024a8219dabeb994c22f49534f3bde86564ca8def3b249c80879b5131d1f2d1c",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}