{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8c61574bb88c0e2a2b3e2af1feae53c87ceafc77e02368682a7be8f63f5fea16",
    "signature": "0xa676244e868500a46bcd068164d7f1a00d202f4581c7fb6b388351f508166ea878da8e913eff8a8d2209fbdd32cec9e8b8da94de1468b92498fd7589eee9ca831c",
    "signer": "0xEC1f468C1B4c4D01530f7262f5bb2780a1BBa55F",
    "userId": "807703067"
  }
}