{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x585c5954259248bcdbbe8df43659c65a2f4f1edcdb25216d3bfe6d3b704a8969",
    "signature": "0x73508d2944c4ee54fe6b9996a1f81c4efa08b34e5e6a61519beb8c8f11309bb7724fcf077ace704dc020bbcfafe960edc5f78098b37fbd204792f84ebfb3d7fd1b",
    "signer": "0x2074DA70847E2FD612f95Cc4406C88196B85DB56",
    "userId": "504638765"
  }
}