{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "844131",
    "entityType": "User",
    "nonce": "0x1a7f27ec564362448cd6894dd48c0ea798698eb4a9e501b653c136fe47f7a975",
    "signature": "0xa3ce71f09b063c11cd32233218598e48301125a32e10c2e523676b5c17b83e7f3147030b9a482f43e0c7d950ce6967e8d0ad71e683eaab1cd100182438ff03851b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}