{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319458",
    "entityType": "User",
    "nonce": "0x37de3c1b28656dd0cadc94c8d3c3ec3c79f1048eb2cbe203e9a4ff29c1ff17a4",
    "signature": "0xb436ffeda89444caaba8e52ecc519848c6a85ad3853d6ee27a38d6aec3ea166330c9fab3472994471e3bda6b7c6578fa58978b7f24a22d8238127e65b1c34da51b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}