{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "152450",
    "entityType": "User",
    "nonce": "0x7816c79ace3b0082ca151137608822fc5a7ddffc68799c75a61013b3773f86d4",
    "signature": "0xf4fd2dbeec3bfdd4ee7755313f2a8d95ce2e1f65d897a6754c53fa71fa7276e00528cc1eb6479ba87fe4dad5775dc1d4781ddfeeba0a1656d05f7be483455cc81b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}