{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "134409",
    "entityType": "User",
    "nonce": "0x8d51d68a2ef6fe918aa6a0d62cebad9017a01573a32f173027429a1ba233b033",
    "signature": "0x38ee68483b50104fb6aa9bd4110c9cab0c3ba43afd7626177d8c2e600af5c8a112c661fe40de16b36d1030f242ae2b60cb924dca30dc4ec76a01ac66802d23e31c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}