{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "649816130",
    "entityType": "User",
    "nonce": "0x47b80fe63f000a0cc8cf9a6cc602b1dedb382f8f7a1e181e4c22f4c1f11475f3",
    "signature": "0x9abcb228fb689d6a755d0c670aa0d9f56915b77f7cf1a280ec0d71d2ddf0354f77c3f6c70ba92f71734fc04ce52de808085a3182b34ec9433e10b7287e95574f1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}