{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "40839",
    "entityType": "User",
    "nonce": "0x102538a213e7e7df8b77522a9969de80f6234fdfeb648951cfd1ab4d7e4fe5b4",
    "signature": "0x6e897bfc14280aa4a0a3f2c8617f3fb1393deaa1da005f8d048c357e2e019eab480b045880795260263441c7501867eb15544b054b3d57377b115fa16dde99b31c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}