{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x2ac1565db46565def940c26fd8d3d2235cb4ffe385c23beb25b2f1e229fda197",
    "signature": "0x469b139cbeb15b83033c2cf3143615463bf504db441dd8f4b509db29a34f2a7e4dc6473357be8034236b681981960cb794c06f6f418806ee664641c65d25b2d21c",
    "signer": "0xAfE04b3A47505816aD72A3036422AC553C1dFEc3",
    "userId": "515307498"
  }
}