{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "72732",
    "entityType": "User",
    "nonce": "0x3da6ed5b3e3c6edc788b23fe5beba5f3a145a68c6561bc28fa3562ec5e0de2f5",
    "signature": "0x857c61a1121c419686a3ddf88703b1863e362f126a52d88fed72d2b5483712c802c7067a1b4b397d0e5c927c72b010b510442d2b63660b2326ce06da23e61c9b1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}