{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "445903495",
    "entityType": "User",
    "nonce": "0x7aecf9c1954d3bd9f0512389061975c77ae3a758f29bd6b398a93567bb76b2b2",
    "signature": "0x414eaeea3e36eb483710a1074a458c840c619d9ea574bd28dac4d107c27cb26539c15280cee1d323802775535859bc530314de761d72017bc8487173136e7f081b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}