{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "951644728",
    "entityType": "User",
    "nonce": "0xf1e6260b9327b6c63a9b6a0a6c770076832b200e64c1bc656f312f89180131f4",
    "signature": "0xfe970e42e874c84e3820d55f20337c55c759446b0f77bd3d4a35b4c3504872ba5f56838d9cad7efb7819a0c10ae5d096474956b524fd2a68f585cae4c598234f1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}