{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "371711",
    "entityType": "User",
    "nonce": "0x6a0e8dedcd3f7988d0aa8d3a58b459d73c5a4491278c5c2efd6f3e8c7671d898",
    "signature": "0x7ec9e7f4b9c933acd1ee46207b5d757c922f6e9f9fc8c11cafd519a9367ccca65c36fb039a98e9db5f944b5e1445f798103b6e9cc60369d1a5642914d43edb521b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}