{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "66000",
    "entityType": "User",
    "nonce": "0xef4dd5904ded6841cdd7bbaefbdd5de7392e426585831c9ec24e3019db164cc2",
    "signature": "0xc6b396e76d1b1179e7050daca87960b23b1e4c5cfb94dc62bcc39e895183fdbd57d66123e7ce395ca0ce5422d9d97e0381aecdf0e91cb2ca0c3049956ee7f1241b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}