{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "136844578",
    "entityType": "User",
    "nonce": "0x874b97aea83be32d287bf7520cffa80f6c10c3728f425237136415cb4eb8bfe7",
    "signature": "0x27a64682eb2640d2bb71a1037fd8a0ca8817eacf5e1cc0707bce842c2573906d0994a4bfd530be9b29c2750e8ebedcf14153a4e72f02fd6208a624dccb3a25fa1c",
    "signer": "0xc28F39d473d5C4cacc612630A8798a119D1Bb506",
    "userId": "901788935"
  }
}