{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51884",
    "entityType": "User",
    "nonce": "0x81e78c2c94cffd0f7e1f9f19e61e179fb14fbe08e6dd42caa248a1ed3309fd93",
    "signature": "0x190fe2c0b6fb29ccd92d104af12baaee210222e5e2a10b8aaf69c1e656a80adf50db0e812210a861b6e6047d0f195100d5fcda57ea002dd6eec3a0a4938539c11b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}