{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "963790938",
    "entityType": "User",
    "nonce": "0x5a9703c17f12754625a327a3e2b0e08a837e1f1de8b2b30052870e4aa49e7a76",
    "signature": "0x51d42bb2b85b80f48e1fe14036d3f3053d51605e00f9f377f1b96898bcf794423d604a79aae6c04bf1aa636eea250dccb4b16f19d7044d3937b4a5eb53f061211b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}