{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "690601",
    "entityType": "User",
    "nonce": "0x69bc31baccd5a9c8fcb48309645752cc40596c172544238047d409c660b9184f",
    "signature": "0x8a7700fca8febcd1015b12afeb591d07922d987f597d7c3484f6dcef0880873e7fa85d1c0c1502ca4122d6e0ea353bca8f97d241b786f3a80f02e5d60c5b57e11b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}