{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "839400815",
    "entityType": "User",
    "nonce": "0xb2c30ab15a5988ca604b7287874415e4b1c9bad2e8a265e1c277555fe7bca861",
    "signature": "0x541d425581b814b5c2bcb09686d0d5e247f1fdd722bd9e4a2d1a43475bc854952315c74784992bad1c6e80552cdc73c68a8e4055a85b2b4c876a8b7dc85081231b",
    "signer": "0x6B239e9B75f27b519de7Bad3a26a0b7d30e32D3f",
    "userId": "311257477"
  }
}