{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7fa13a2d6287ef3870d822f0043202d8da3edd2a4385edaa15a51e4c6985012b",
    "signature": "0x4938e80f18c271364cbb15d169290942449bb55c940b561d3b2647ad1499810047a178a3019f4e0db1bbc064fe9cfd9efcd5dc94fc5ea8f39314fdb26db8dff11b",
    "signer": "0x01b7dF4992b462968b6077496f6B6C9E50b5a907",
    "userId": "638730380"
  }
}