{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1887940",
    "entityType": "User",
    "nonce": "0xa2357a81741cfd80037ebe2bf67e2b98892f9743c1ed8b1ce92292201d3921be",
    "signature": "0x17fc038e41652a7f7ef45a8982acb4670a75952cdcd0cd9b1e3d248ee7af12177925e9bb2dfe4b9e0335f80324a54f2db710d9d3e47dd769b7aeb09f4750386c1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}