{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1812000",
    "entityType": "User",
    "nonce": "0xd08d0bc0fbfa6501501cdf00120cdf15e02ae45317884e60426d27839c251ca6",
    "signature": "0xc192b826da2e7a4c490087eecd7d942f3b1057455d86b153a533cc8406eb07382aa657e72bec10b488ba665b9225ab079169509b75dec54e7c1787727acf4ac81b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}