{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5307724",
    "entityType": "User",
    "nonce": "0xe9f3841f0b8e55dd9ec4c0fe0def9ac3aa6ad2c3d25b1e95383257c7a4360ce5",
    "signature": "0xc2702c9b45e30dd26a255c5caf2f4590b4d7f7855c09d9cbfa880c4a3ac7232a3752df05ba257dd7dc9a8b7f03cae4b4d1cdb10eee634aee6b240f9d510787591c",
    "signer": "0xd648B38B61b65e4F8df57D4EE65560D8DaacFDb2",
    "userId": "277314120"
  }
}