{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1438324",
    "entityType": "User",
    "nonce": "0x47c3a351914a8e85fb0848fabcfb6cbe1a77976f0fbb406d0fafe8e0039ca0cf",
    "signature": "0x99b81241e4db918bb85757b798f5d8b4c389434d676c98f8aaff6ff346e080c141067c12401553b90bc9623e597d2307b0c77d0bcadd3c93821d10e35e2ace971b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}