{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3e00fa1ad9a43f9647d6046ffdfc95bceb2f3840d77543b0eb36a274cd606eab",
    "signature": "0xec0060270e7f5c17d30834a0197bf7e09461104df2c7836c1423eca1215eb8951ca12e06fd55b85fd901bba54ebe2ac068ced81df2030307dc424e8aedf1d3531c",
    "signer": "0x20132B5b04f90b6ac3f1DB5e2A5D220b53498beb",
    "userId": "164213280"
  }
}