{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc5b91ad2c268a31bb00b0e3ea50c85aa7575280075f83ea033645bfbf1ab542f",
    "signature": "0x7b7af254a9e6060d30980218af2298c131260cc424fa35f05b996909ea8949ab2c18f8ddf415cc87eb0ec7db4bda388a60978b115207a7141d4f41a1d658e6581c",
    "signer": "0x1801a170c1eD9867B3079f30858f587fa1D0fF3A",
    "userId": "566883717"
  }
}