{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345786641",
    "entityType": "User",
    "nonce": "0x90117d6f53251cb3a1da047fef36a9c1d8b43e47ecf13176db5a1b29392b3719",
    "signature": "0xb3b6d4b6e0824888ca7c227100551645de3fa356db222af5c21187d50dc9201851544d97babf3ad147deba7b38511b1f3567935f9a442fbc80efa410ec0ba6801c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}