{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200914",
    "entityType": "User",
    "nonce": "0x256838b8a904ae86b475ba2a9b505ebe79b188906e255f1938e8676fe3c94737",
    "signature": "0xf845eb00cbd9613415642c9a5a6a46fae837d38ed53f9d256da434adbb9f882b530572760724ad0b8846a8dd3ccc62a2909b68dfb65d0cf8c83413a04611ac641b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}