{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "218470",
    "entityType": "User",
    "nonce": "0x5a648619930a5349b737456ec8be5764cf594dfc41f6dcf2c8f4ad8d14f1e565",
    "signature": "0x186d2afeff202614734a0dfb1cd7bc88027a07f1a23bfb0b12d79e6b8e11950a7cfcf1e5e7ac613f3c3d5bd0d129db65bc533dfa4604c50d6d5246ff9449b9671c",
    "signer": "0x5e16eE72f4c7af2A50C7DA188d65e074e69D78B9",
    "userId": "898051107"
  }
}